Antiskid device for motor vehicles



s. H. DAVIES. I ANTISKID DEVlC MOTOR VEHICLES. APPLICATION MAR. SUI l92l. 1 432 97 Patented 0015.24, 1922. 2 sums-sum 1.

S. H. DAVIES. ANTISKJD DEVICE FOR MOTOR VEHICLES. APPLICATION FILED MAR. 30. 192i.

ggg gm Patented Oct. 24, 19212. I 2 SHEETS-SHEEI'Z- 1 i a. Z

J I n 7% 3 1 f 1 @t y l '0 l z; 7 70 J15 Wu 19 4 \23 o I y gjwuozntoa S-H-Davefi- 4 Elitobwqf Patented Get. 24, 1922.

SEPTIMUS H. DAVIES, OF CALGARY, ALBERTA, CANADA.

eii i rm 10E r 03 MQTQR mama Application filed na e 30,1921. SeriaI no. 457,017.

To 0,27 whom it may concern.

Be it known that I, Snr'rmius DAvI Es, a citizen of thef'Unlted States, residing at I Calgary, in theiPro vince of Alberta and Dominion of Canada, have inyented certain new and useful lmpr'ovements'in' Antisltid" Devices for Motor Vehicles, following is a specification.

This invention relates to an improved anti-slipping device for motor vehicles and has as one of its principal objects to provide of I which the a device ofthis character which may be employed in connection with the rearwheels of a vehicle and operated, as desired, to provide sure traction-for the veh cle.

The invention has as a further ob ect to proyide'a device employing a plurality of arms ordogs which maybe projected to en- I gage the ground at one side ofgthewlieel carrying the device.

And the invention has as a still further ob ject to provide a device wh ch may be employed in connection with antOIilQl-iiles of substantially any conventional design.

Other and incidental"objects will appear hereinafter.

in the drawings:

Figure 1 is a side elevationshowing my improved device in connection with awheel of a motor vehicle of conventional design,

Figure 2 is a vertical sectional view more fully bringing out the mounting of the device,

Figure 3 is a detail perspective showing one of the ground engaging arms or dogs employed,

Figure 4 is a detail plan view particularly showing the control mechanism employed in connection with the device, and

Figure 5 is a detail perspective view particularly showing the working end of the dog actuating lever employed.

Referring now more particularly to the drawings, I have shown my improved device in connection with the rear axle and one rear wheel of a motor vehicle of conventional design. The rear axle is indicated at 10 while the wheel hub is indicated at 11. Projecting from said hub are the wheel spokes 12 supporting a telly 13 and surrounding said telly is one of the vehicle tires as conventionally illustrated at 14. The present device is mounted at the inner side of the wheel or, in other words, that side of the wheel remote from the outer end of the wheel hub.

'lncarrying the invention into efiect, I employ a plural ty oi guides 15, a pai of saidlguides beingmounted in spaced relationfuponeach of 't'he'spokes 12. As shown in d etail in Figure 2, the guides are provided at'the r inner end port ons with spaced arms embracing the spokes and extending through the arms near their free endsare suitable bolts adjustablefor clamping the arms about the spokes and firmly securing the guides thereto; Sli'dable through] each pair of the guides is aradially disposed ground engaging arm ordog 16. Any approved number ofthese' clogs 'may be employed and, as will out their length. Formed on or otherwise secured to each of the dogs is a channel shaped 'se mentlf provided near each end thereof a palr of laterally projecting pins'18 extending from opposite sides of the segment! The several segments of the dogs are, also brought out in Figure 1, formed toinateandprovidea channel shaped annulus lying at the inner sides of the dogs and loosely connecting said segments are links 19 provided at their end portions with slots freely receiving the pins 18 of the segments therethrough.

Slidable upon the adjacent end portion of the axle 10 is a collar 20 and suitably secured t0 the axle in advance of the collar is a substantially U-shaped depending guide bracket 21. Slidable freely through an opening in the bend of this bracket is a dog actu ating lever 22 pivotally connected at its upper end with the collar and provided at its lower end, as particularly shown in Figure 4L, with a cylindrical longitudinally curved head 23 which fits loosely in the channel of the annulus formed by the segments upon the dogs. As will be observed, the ends of said head are reduced or pointed so that the head may readily pass from one segment into another. Pivotally connected to the collar 20 is a yoke 24 straddling the collar and mounted in the rear of the collar is a bell crank 25., one arm of which is pivotally connected with said yoke while to the other arm of said bell crank is attached a rod 26 extending to the forward portion of the vehicle convenient to the drivers seat.

be observed upon reference toj Figure 1 0t the draw ngs, the alternate dogs are twisted mediate dogs are straight and flat throughare encountered, the device may be brought into operation and will, as will be appreciated, provide sure traction for the vehicle, one of the improved devices being preferably employed in connection with each rear wheel of the vehicle. I

Having thus described the invention, what is claimed as new is:

1. The combination with a vehicle wheel, of guides carried by the wheel spokes, dogs slidable radially through said guides to project at the periphery of the wheel, a segment carried by each of said dogs, the segments of the several dogs mating to provide an annulus, and means arranged to coact with said annulus for successively projecting the dogs.

2. The combination with a vehicle wheel, of guides secured to the wheel spokes, dogs slidableradially through said guides to project at the periphery of the wheel, a segment carried by each of said dogs, the seg ments of the several dogs mating to provide an annulus, means extending between the segments loosely connecting the dogs with each other, and means arranged to coact with said annulus for successively projecting the dogs.

3. The combination with a vehicle wheel, of guides carried by the wheel spokes, dogs slidable radially through said guides to project at the periphery of the wheel, a channel shaped segment carried by each of the dogs, the segments of the several dogs mating to provide a channeled annulus, and means slidable in said annulus and operable for successively projecting the dogs.

4;. The combination with a vehicle wheel, of guides carried by the wheel spokes, dogs slidable radially through said guides to project at the periphery of the wheel, a channel shaped segment carried by each of the dogs, the segments of the several dogs mating to provide a channeled annulus, and a lever having a head slidably fitting in said annulus, the lever being operable for successively projecting the dogs. I

5. The combination with a vehicle wheel, of guides carried by the wheel spokes, dogs slidable radially through said guides to project at the periphery of the wheel, a channel shaped segment carried by each of the dogs,

the segments of the several dogs mating to provide a channeled annulus, a lever having a head slidably fitting in said annulus,

the lever being operable forsuccessively projecting the dogs, and means normally holding the lever retracted.

In testimony whereof I aflixmy signa ture.

'sEPTIMUs H. DAVIES. L. 3.] 

